objective c - NSButtonCell NSSwitchButton doesn't display checked box -

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the nsbuttoncell code bellow works fine, doesn't visualy display check icon when clicked. ideas why?

  - (nscell *)outlineview:(nsoutlineview *)outlineview datacellfortablecolumn:(nstablecolumn *)tablecolumn item:(id)item {          if ([[tablecolumn identifier] isequaltostring:@"select"]) {              nsbuttoncell *cell = [[nsbuttoncell alloc]init];             [cell setbuttontype:nsswitchbutton];             [cell settarget:self];             [cell setaction:@selector(checkboxchanged:)];             [cell settitle:@""];              return cell;          } else {             nscell *cell = [tablecolumn datacell];             return cell;           }       }

here action code:

- (ibaction)checkboxchanged:(id)sender {      nsbuttoncell *acell = [[sender tablecolumnwithidentifier:@"select"]                       datacellforrow:[sender selectedrow]];       if ([acell state] == nsonstate) {          nslog(@"on");         [acell setstate:nsoffstate];       } else {           nslog(@"off");         [acell setstate:nsonstate];     }  }

i'm not sure why first solution didn't work—maybe didn't have delegate hooked up? note data source , delegate 2 separate things.

the method implemented in answer, data source, not proper place that. data source, , particularly numberofrowsintableview: , tableview:objectvaluefortablecolumn:row:, should only return content being presented, not create view/cell objects.

i recommend creating and configuring nsbuttoncell in xib, if have one, or in same place create table view , columns—that's correct place set each column's cell.


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